Joma.·.oF diesels - Westerbeke

anew
:Joma.·.oF
• •
diesels
I
• FOur cycle, fOur cylinder
52 H.P. marine engine
• lOW prOfile and lightweight
• New self priming fuel system with electric shut Off
• HI-capaclty heat exchanger with removable end caps and zinc electrode
• Fresh water cooled manifOld with front or rear eXhaust openings and a
remote recovery tank fOr visible coolant monitoring.
• Heavy flywheel, precision balanced, fOr that steam engine effect
• Tuned air Intake silencer for lower noise level
ENGINES: 10.2, 13, 21, 27, 33, 46, 58, 70, 80, 100, 120
" ., , . . . .,. .

A NEW COMPACT DIESEL, 52HP FOR YACHTS UP TO 55FT.
--- _-_.!.- _ _ - - ~" t '
CO STRUCTION
I. Cylinder Head: The special cast-iron cylinder head is
precision-cast by the shell moulding process and then soft-gasnitrided
for increased durability. The intake and exhaust ports
are arranged for cross flow to raise the intake and exhaust efficiency.
The swirllype precombustion chamber is used.
2. Cylinder Block: Weight reduction achieved by technologies
of thin wall ductile cast iron and half skirt. The water rail is
designed to provide uniform distribution of coolant to the cylinder
head. The cylinder liner is of the dry type of highphosphorus
cast iron, which is given special honing to provide
quick seating. and good oil retention, thus increasing wear
resistance.
3. Crank Mechanism: The forged crankshaft is supported by 5
bearings. The autothermatic piston of Lo-Ex alloy has a sheet
metal cast in its skirt so as to hold the thermal expansion of the
pisto n, thereby making it possible to lessen the piston clearance.
The piston pin is offset by O.5mm . All these improvements
ensure quiet operation from low to high speeds.
4. Valve Mechanism: O .H. V. Both intake and exhaust valves
are of rotation type for higher durability of the valve seat.
Coupled with a friction gear with one extra tooth , the timing
gear train is intended to eliminate the backlash at the time of gear
engagement to reduce gear noise .
5 . Intake and Exhaust System: The intake manifold is of independent
branch type for higher intake efficiency.
6 . Fuel System: The fuel injection pump is a Bosch VE type
distributor pump, small in size and light in weight, contributing
to ward noise reduction. Since fuel can be cut with the solenoid
valve built in the pump, the engine operation can be stopped by
turning off the ignition switch.
SPECIFICATIONS
Number of Cylinders & Arrangement ......... .... 4 in-line
Cylinder Bore & Stroke ............... 3.50 in. x 3.5 I in .
Displacement ............................ 134.8 C. LD.
Compression Ratio .........• . ...... . ............ 2 I: I
Combustion Chamber ....•.................. Swirl Type
Firing Order ................. . ............... 1-3-4-2
Injection Pump .......... . ....... Bosch Distributor Type
Governor ..... .. .... .. ... .. . Mechanical (Built in Pump)
Lubrication Method ... .. ............ Pressure Feed Type
Cooling Method ......... .. ......... Fresh Water Cooled
Cold Starting Aid .......................... Glow Plug
Electrical System Voltage .......... . ........... 12 Vo lts
Dry Weight of Engine (w/2: I Trans.) .. . . . ........ 627 Ibs.
Power Take-off ............ . .. Various Crankshaft Pulleys
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PERRlRMANCE CURVE
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EHr.rtIE SPEfD RPM
I'ERFOR:\\A ' CE DATA
Maximum Torque ........ 93.3 ft. Ib./2500 r.p.m.
One hour Rating
35 HP/2000 r.p.m .. 53 HP/3000 r.p.m .. 66 HP/4000 r.p.m.
Continuous Rating
30 HP/2000 r.p.m., 45 HP/3000 r.p.m . . 56 HP/4000 r.p.m.
Typical Fuel Consumption Rate ......... 063 US gal/HP/hr
Typical Fuel Consumption Rate at 2500 RPM
when wheeled to tum 3000 RPM ......... 1.7 US gal/hr
Capacity of Lubricant ............ . .. . ......... 5.3 qts.
Capacity of Coolant ...... . ............. .... 10.5qts.
STA:'\OARO EQlIPME'T
Clutch and 2: I Reduct ion Gear (R.H. Propeller)
Adjustable flexible mounts on 18" centers
Fresh water cooling system
12 volt 55 ampere alternator
Clutch and throttle control brackets (
Glow plug cold starting aid
Engine pre-wired with single 8 pin connector
Electric shut off
Operators manual
Alarm, low oil pressure, high water te mperature
Water Injected Exhaust Elbow
Lube O il Drain Hose
Flowcontroller-foreasy connection of domestic hot water heater
OPTIONAL EQUP:\IE"iT
Various accessory front pulleys
Hydro-Hush Muffler
Sea Water Strainer
Alternator Output Spliner
Additional 55 amp. alternator
Primary 90 amp. alternator
18/20/22 y," mounting centers
Remote mounting lu be oil fi lter
Five functio n Electric Instrument Panel including Hour Meter
and Tachometer
A wide variety of manual and hydraulic transmissio ns are avai l­
able in various reduction gears and vee drives.
Front exhaust outlet for Vee Drive applications
CALL YOUR WESTERBEKE REPRESENTATIVE
[ 1
OR CONTACT THE. . . (
J. H. WESTERBEKE CORP.
Marine 2J84J5M
Avon Industrial Park, Avon, MA 02322, (617) 588· 7700
Cable: Westcorp, Avon, Te lex: 9 2-4444

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1nmarlne
diesels
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• FOur cycle, four cylinder
52 H.P. marine engine
• LOW prOfIle and lightweight
• New self priming fuel system with electric shut off
• HI-capaclty heat exchanger with removable end caps and zinc electrode
• Fresh water cooled manifold with front or rear exhaust openings and a
remote recovery tank for visible coolant monitoring.
• Heavy flywheel, precision balanced, for that steam engine effect
• Tuned air Intake silencer for lower noise level
ENGINES: 13,21,27,30,33,40,50, 58,70,80,100,12
.. . ,

A NEW COMPACT DIESEL, 52 HP FOR YACHTS UP TO 55 FT .
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CONSTRUCTION
I. Cylinder Head : The special cast-iron cylinder head is
precision-cast by the shell moulding process and then soft-gasnitrided
for increased durability. The intake and exhaust ports
are arranged for cross flow to raise the intake and exhaust efficiency.
The swirl type precombustion chamber is used.
2. Cylinder Block : Weight reduction achieved by technologies
of thin wall ductile cast iron and half skirt. The water rail is
designed to provide uniform distribution of coolant to the cylinder
head. The cylinder liner is of the dry type of highphosphorus
cast iron , which is given special honing to provide
quick seating. and good oil retention, thus increasing wear
resistance.
3. Crank Mechanism : The forged crankshaft is supported by 5
bearings. The autothermatic piston of Lo-Ex alloy has a sheet
metal cast in its skirt so as to hold the thermal expansion of the
piston, thereby making it possible to lessen the piston clearance.
The piston pin is offset by 0.5rnm. All these improvements
ensure quiet operation from low to high speeds.
4. Valve Mechanism: O.H.V. Both intake and exhaust valves
are of rotation type for higher durability of the valve seat.
Coupled with a friction gear with one extra tooth, the timing
gear train is intended to eliminate the backlash at the time of gear
engagement to reduce gear noise.
5. Intake and Exhaust System: The intake manifold is of independent
branch type for higher intake efficiency.
6. Fue l System: The fuel injection pump is a Bosch VE type
distributor pump, small in size and light in weight, contributing
toward noise reduction . Since fuel can be cut with the solenoid
valve built in the pump, the engine operation can be stopped by
turning off the ignition switch.
SPEClFlCA TlONS
Number of Cylinders & Arrangement ......... 4 in-line
Cylinder Bore & Stroke ............... 3.50 in . x 3.51 in .
Displacement ............................ 134.8 C.l.D.
Compression Ratio ............. . •............. . 21: I
Combustion Chamber ....................... Swirl Type
Firing Order .......... . ................. 1-3-4-2
Injection Pump ........... . ...... Bosch Distributor Type
Governor ................... Mechanical (Bui lt in Pump)
Lubrication Method ................. Pressure Feed Type
Cooling Method .................... Fresh Water Cooled
Cold Starting Aid ....... . .............. Glow Plug
Electrical System Voltage ...................... 12 Volts
Dry Weight of Engine (w/2: I Trans.) ............ . 627 Ibs .
Power Take-off ............... Various Crankshaft Pulleys
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PERFORMANCE DATA
Maximum Torque ......... .
One hour Rating
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PERFORMANCE CURVE
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ENGINE SPEED RPM
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1.8
93.3 ft. Ib./25oo r.p.m.
35 HP/2ooo r.p.m. , 53 HP/3ooo r.p.m .. 66 HP/4ooo r.p.m.
Continuous Rating
30 HP/2ooo r.p.m .. 45 HP/3ooo r.p.m .. 56 HP/4ooo r.p.m.
Typical Fuel Consumption Rate ......... 063 US gal/HP/hr
Typical Fuel Consumption Rate at 2500 RPM
when wheeled to tum 3000 RPM
Capacity of Lubricant ... . ...... .
Capacity of Coolant ....... .
STA 'DAR!> EQL'IPMENT
Clutch and 2: I Reduct ion Gear (R.H. Propeller)
Adjustable flexible mounts on 18" centers
Fresh water cooling system
12 volt 55 anlpere alternator
Clutch and throttle control brackets
Glow plug cold starting aid
Engine pre-wired with single 8 pin con nee lOr
Electric shut off
Operators manual
Alarm, low o il pressure , high water temperature
Water Injected Exhaust Elbow
Lube Oil Drain Hose
~
I .7 US gal/hr
5.3 qts.
10.5 qts.
Flowcontroller-for easy connection of domestic hot water heater
OI'TlONAL EQUIPi\IE:'IiT
Various accessory front pulleys
Hydro-Hush Muffler
Sea Water Strainer
Alternator Output Splitter
Additional 55 amp. alternator
Primary 90 amp. alternator
18/20/22 v, " mounting centers
Remote mounting lube o il tilter
Five function Electric Instrument Panel including Hour Meter
and Tachometer
A wide variety of manual and hydraulic transmissions are available
in various reduction gears and vee drives.
Front exhaust outlet for Vee Drive applications
CALL YOUR WESTERBEKE REPRESENTATIVE
[ ___ ~l
OR CONTACT THE ...
J. H. WESTERBEKE CORP.
(
(
(
Manne NLP 6/6217500
Prlnled In USA
Avon Industrial Park, Avon, MA 02322, (617) 588-7700
Cable: Westcorp, Avon, Telex: 92-4444

anew
in
• 1=Our cycle, fOur CVllnder
52 H.P. martne engine
• LOW profile and lightweight
• New self priming fUel system with electric shut Off
• HI-capaclty heat exchanger with removable end caps and zinc electrOde
• Fresh water cooled manifOld with front or rear exhaust openings and a
remote recovery tank fOr visible coolant monitOring.
• Heavy flywheel, precision balanced, fOr that steam engine effect
• TUned air Intake silencer fOr lower noise level
•• WESTERBEKE W-52

A NEW COMPACT DIESEL, 52HP FOR YACHTS UP TO 55FT.
, I
17.0
I ,
2.87
7.50
CONSTRUCTION
14.0 25.0-----;
WESTERBEKE W ·52
series 18
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TRAil' 1 . ~!OUC.lOII ~ .. _
16.25 ___ '; I
20.50 -!
1.5 ...
tA".un
l. Cylinder Head: The special cast-iron cylinder head is precisioncast
by the shell moulding process and then soft-gas-nitrided for
increased durability. The intake and exhaust ports are arranged for
cross fl ow to raise the intake and exhaust efficiency. The swirl type
precombustion chamber is used.
2. Cyl inder Block: Weight reduction achieved by technologies of
thin wall ductile cast iron and half skirt. The water rail is designed
to provide uniforl11 distribution of coolant to the cylinder head.
The cylinder liner is of the dry type of hi gh-phosphorus cast iron,
which is given special honing to provide quick sea ting, and good oil
retention, thus increasi:1 g wear resistance.
3. Cran k Mechanism : The forged crankshaft is supported by 5
bearings. The autothermatic piston of Lo-Ex alloy has a shee t metal
cast in its skirt so as to hold the thermal ex pansion of th e piston,
th ereby making it possible to lessen th e pis ton clearance. The piston
pin is offset by 0.5111 111 . All th ese improvements ensure quiet
operation from low to high speeds.
4. Valve Mechanism: O. H.V. Both intake and exhaust va lves are of
rotation type for higher durability of the valve seal. Coupled with a
friction gear with one ex tra tooth, th e timing gear train is intended
to eliminate the backl ash at the time of gear engagement to reduce
gear noise.
S. Intake and Exh